Improvement in iron-rolling mill



sylvania, have invented a motion, and such that, while the bar, pile,

`ANTHONY C. KLOMAN, 0F IITTSBURG, PENNSYLVANIA.

Lette/rs Patent N 105,952, dated August 2, 1870.

IMPROVEMENT IN IRON-ROLLING- MILL.

The Schedule referred to in tliese Letters Patent and making part of the same.

To all whom it 'may concern:

Be it known that I, ANTHONY G. KLOMAN, of Pittsburg, in the county of Allegheny and State of Pennnew and useful Improvement in Rolls for Rolling Iron; and I do hereby declare the following to be a full, clear, and exact description' thereof, reference being had to the adcompanying drawing making a part of this specification, in whicht l Figure l is a front elevation of Imy improved rolls, and

Figure 2 isa vertical sect-ion of the upright 'rolls through their axes. t

Like letters of reference indicate like parts in each.

My invention is designed, more particularly, for the rolling of broad bars or plates of iron, of definite width and finished edges.; and 4 'Ihenature of it consists in so constructing the operative devices for imparting motion` to the upright or edging and feeding-rolls, that they may, while feeding in the bar, pile, or fagot, have a denite, posit-ive or` fagot is being drawn or reduced in. thickness ybetween the horizontal rolls, such vertical rolls may have a motion independent ot' the shafts on which they work.

A difficulty has been experienced in the use of vertical or edging-rolls, when geared in connection. with horizontal reducing-rolls, from the fact that the rapidity of motion desired inV the vertical rolls varies according to the amount of the `reducing and drawing action of the horizontal rolls, inasmuch asthe less the billet or bar is reduced by the horizontal rolls, the more rapidly will the body ofthe Vbillet or bar be fed in, and the more rapidly will the front vertical rolls be required to move.V

Hence, the horizontal and vertical rolls, being geared so as to operate together, and at uniform 'relative speed, on a bar` or billet, while it is reduced, a certain amount at a single pass, if, at the next pass, the amount of such reduction be changed, the faces of the vertical rolls must slip or slide on the edges of the bar or billet, always with a great waste of power, and frequently resultingin the breakage of the gearing or other part of the machine.

l By iny invention, I arrange the vertical rolls each loosely on ashaft, and-connect them with a clutch, the motion of which is secured by means of the same shaft, and a key or feather, so that when a positive motion is desired, as when feeding the end of the bar orbillet up to the bite of the horizontal rolls, the vertical rolls, operated by means of the clutch, shall feed in and edge npthe bar or billet, and while the horizontal rolls are drawing the -bar through, and drawing and reducing it, the vertical rolls may operate independently of-their shafts, according to the speed with which the, as yet, unrolled body ofthe bar or billet is pass ing through.

To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and mode of oper-ation.

The horizontal rolls a a', of the usual or any known construction, may be mounted in any suitable housings b. The distance between their operative surfaces at the point of bite may be varied at pleasure by pressure-screws u n, or in any ofthe ways known to the art.

In front of the reducing-rolls, in any suitable framework c,I adjust a pair of upright rolls, d d, which work loosely on their shafts d' d'. l

The upper end of each such vertical roll is made with steps e,like one-half crabclntch,and correspond-v ing reversed steps c", like the other half' of a crabclutch, are made in each clutch-piece f, whichlatteris fitted onto the shaft d', and secured so as to rotate with it, by means of a key or feather, fi, playing in a longitudinal groove, i', or by other equivalent device, but still so as to permit of its moving vertically.

The power to operate the vertical rolls is connnunicated through gearing h, shaft g, and ruiter-wheels '0, or in other equivalent mode.

The vertical rolls also may beniade adjustable to and from each other, in any of the ways known to the art.

The pile, billet, plate, or bar to be rolled, being heated, is first fed in between the upright rolls d d, theybeing set at such distance apart that they will takea bite on it, edge it up, and feed it forward to the point of bite of the horizontal roll a a.

` The gearing 'is so constructed and arranged that the upright rolls will, as operated by their shafts d and clutches f, have a mot-ion corresponding with the for Ward feed of the bar, when it is being 'reduced the minimum amount which it is to be reduced at a single pass, and in no case shall they give the bar or billet a motion forward more rapid than the horizontal rolls are designed to give it.

The horizontal rolls are set, so as to' give the desired reduction to the plate or fagot. After they take a bite on such plate or pile, it is designed that they alone shall 'give it a forward motion. The rapidity of this forward motion depends on the amount o f the reduction, as related to the entire thickness of the plate or pile reduced. The greater the reduction, the less rapid the forward feed. At the 'rst pass, thereduction is commonly greatest, and the vertical rolls may begeared so forward, as fast as it goes in between the horizontal rolls, but no faster.

as,to feed Vthe body of the plateor pile As the proportionate mnount of reduction from one pnss to the next becomes less and less, the speed dcsired in the vertienl rolls becomes greater.

By the use ofthe clutch described, this incl-ense of speed, which muy be greater or lesser, according to cireumstnnces, is provided lor. lthe hulffclntches on the upper ends ot' the rolls l d, (the lette-r playing freely on their shzifts,) force the clutch-pieces upwnrd by the inclined farces of the two playing,l against euch other, so us to disengnge roll zuid clutch, whereby the verticul rolls rotate with un independentJ motion of their own.

The shafts rl cl' ure kept well oiled, so as to reduce friction to :t minimum. In this wn-y, I avoid all sliding of the verticatl rolls on thc edges ot' the plates, imi-s, piles, or itgots, und secure their full measure of usefulness, ns feeding, edging, :1nd guide-rolls.

The saune beneiieinl result is secured by making the nprightrolls oi`les s diameter than the horizontal rolls, und gearing them together, so thnt they shell operaite with n motion more nenrly uniform.

Although in describing my improvement l have described thc crab-clutches, bymeztus of which the de sired effect is produced, as beinar placed on the shafts of the vertical rolls, it'l muy be more convenient to place this device on the horizontal shaft, in connection with the niiterwheels, or any gem' wheels' between the moin driving-wheel :md rolls, with preciscl y :t like result, but, in this case, the crnbs which slide alongthe shui't would have to be furnished with springs or similmdevice, to keep them up to their work, whereas, in the nrrzuigemcnt I have described, the upper crabs are kept in contact with the lower ones by their own weight. 'In like manner, the crab-clutches mcy be nrrzmged on the lower ends of the vertical rolls, and he kept up in like manner.

Having thus described my improvement,

VVhztt I claim as my invention, nud desire to secure by Letters Patent, is-

ln combination with the pair of horizontal reducing- `mils und the pnir of vertical feeding and edging-rolls, the crab-clutches, arranged to drive the vertical rolls, und cnuse them to feed the metal forward to the horizontal rolls, but which may slide over each other, without; interlocking, when the speed of the vertical rolls is accelerated beyond that which is due to the driving-gear, substantially as described.

In testimony whereof, I, the said ANTHONY C. KLO- MAN, have hereunto set my hand.

ANTHONY C. KLOMAN.

Witnesses:

JOHN GLENN, Trios. D. KERK. 

